Sahih Muslim 5963
صحيح مسلم#5963SahihJabir reported Allah's Messenger (ﷺ) as saying:The similitude of mine and that of the Apostles is like that of a person who built a house and he completed it and made it perfect but for the space of a brick. People entered therein and they were surprised at it and said: Had there been a brick (it would have been complete in all respects). Allah's Messenger (ﷺ) said: I am that place where the brick (completing the building is to be placed), and I have come to finalise the chain of Apostles
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 43:26